/* 去除所有内外边距 */

* {
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
}


/* 主体使用弹性布局 */

.main {
    display: flex;
    flex-direction: row;
}

.aside {
    width: 200px;
    background-color: #2c3e50;
    text-align: center;
    display: flex;
    flex-direction: column;
    font-size: 20px;
}

.aside a {
    color: #fff;
    line-height: 3em;
    text-decoration: none;
}

.aside a:hover {
    background-color: black;
}

.content {
    background-color: #ecf0f1;
    width: 100%;
}

.card {
    background-color: #fff;
    margin: 10px;
    box-shadow: 2px 1px 5px #95a5a6;
    border-radius: 5px;
    padding: 10px;
}

.card-title {
    line-height: 2em;
    font-size: 18px;
    margin-left: 10px;
    border-bottom: 1px solid #dfe6e9;
}

ol {
    margin-left: 20px;
}

ol a {
    text-decoration: none;
    color: #00b894
}

.card-body {
    padding: 10px;
}


/* 设置滚动条的样式 */

::-webkit-scrollbar {
    width: 12px;
}


/* 滚动槽 */

::-webkit-scrollbar-track {
    box-shadow: inset006pxrgba(0, 0, 0, 0.3);
    border-radius: 5px;
}


/* 滚动条滑块 */

::-webkit-scrollbar-thumb {
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.1);
    box-shadow: inset006pxrgba(0, 0, 0, 0.5);
}